Data · dataset · 2019
London Campaign all Four Sites 2017
Listed in UBIRA eData
Particulate matter originated from traffic has attracted major interest over the last few years.
Description
The semi-volatile organic component of the particles may evaporate with dispersion away from the emission source, creating vapour which may oxidise to form secondary organic aerosol. Air samples were collected from a street canyon, the adjacent park and an urban background site during the winter-spring period in central London, UK.
Emissions of semi-volatile organic compounds (SVOCs) and intermediate volatility organic compounds (IVOCs) ranging from C10 to C36 in both the gas phase and particle phase were measured by using thermal desorption coupled to comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (TD-GC×GC-ToF-MS). Main compound groups identified and quantified were grouped alkanes (n-alkanes and branched alkanes), monocyclic alkanes, bicyclic alkanes and monocyclic aromatics.
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The carbon preference index (CPI) of n-alkanes was estimated to distinguish the emission sources. Pearson correlations between SVOCs and traffic tracers (black carbon, NOx and benzene) in different locations were compared to analyse the influence of this emission source. The results indicate that while the major emission source at the roadside site is traffic, the lower correlations at background sites are indicative of other source contributions and/or differential reactivity of compounds.
Gas-particle phase partitioning of n-alkanes is evaluated and compared between sites. The potential influence of gas phase compounds upon OH reactivity and secondary organic aerosol formation is estimated and found to be relatively small.
Links
Where it is published
- UBIRA eData record edata.bham.ac.uk/335/1/London%20Campaign%20all%20four%20sites%202017.zip ↗
landing page · from edata bham ac uk
- DOI doi.org/10.25500/edata.bham.00000335 ↗
DOI / persistent id · from edata bham ac uk
Catalogue records · 1
- OAI-PMH record edata.bham.ac.uk/cgi/oai2?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3… ↗
metadata API · from edata bham ac uk
Topics
- From keywords
- Earth & Environmental Science
- Inferred from text
- Mass spectrometry 75%
Provenance · 1 source records, 6 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| UBIRA eData | oai:edata.bham.ac.uk:335 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · edata bham ac uk | connector:edata_bham_ac_uk@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · edata bham ac uk | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · edata bham ac uk | connector:edata_bham_ac_uk@1.0.0 | /metadata/dc/description |
| license_text | source · edata bham ac uk | connector:edata_bham_ac_uk@1.0.0 | |
| publication_date | source · edata bham ac uk | connector:edata_bham_ac_uk@1.0.0 | |
| title | source · edata bham ac uk | connector:edata_bham_ac_uk@1.0.0 | /metadata/dc/title |